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Learning Outcomes
Learning Outcomes
Label the parts of a microscope
State the functions of the parts of a microscope.
Use a microscope to observe a single celled organism.
Draw and label a biological drawing of the Amoeba.
Observe a single celled organism under the microscope & explain why it is a living thing.
Understand that there are Multicellular as well as Unicellular organisms
Parts of a microscope
Parts of a microscope
There are three structural parts of the microscope i.e. head, base, and arm.
Head – This is also known as the body, it carries the optical parts in the upper part of the microscope.
Base – It acts as microscopes support. It also carriers the microscopic illuminators.
Arms – This is the part connecting the base and to the head and the eyepiece tube to the base of the microscope. It gives support to the head of the microscope and it also used when carrying the microscope.
The optical parts of the microscope :
The optical parts of the microscope :
are used to view, magnify, and produce an image from a specimen placed on a slide. These parts include:
Eyepiece – also known as the ocular. this is the part used to look through the microscope. Its found at the top of the microscope.
Eyepiece tube – its the eyepiece holder. It carries the eyepiece just above the objective lens.
Objective lenses – These are the major lenses used for specimen visualization. They have a magnification power of 40x-100X.
Nose piece – also known as the revolving turret. It holds the objective lenses. It is movable hence it cal revolve the objective lenses depending on the magnification power of the lens.
The Adjustment knobs – These are knobs that are used to focus the microscope.
Stage – This is the section on which the specimen is placed for viewing. They have stage clips hold the specimen slides in place.
Aperture – This is a hole on the microscope stage, through which the transmitted light from the source reaches the stage.
Microscopic illuminator – This is the microscopes light source, located at the base.
Condenser – These are lenses that are used to collect and focus light from the illuminator into the specimen.
Diaphragm – its also known as the iris. Its found under the stage of the microscope and its primary role is to control the amount of light that reaches the specimen.
The rack stop – It controls how far the stages should go preventing the objective lens from getting too close to the specimen slide which may damage the specimen.
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